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How to compute a standard deviation and control chart when you don’t have raw data

It ought to be easier than this and perhaps I could have found an easier way if I had more patience than the average ant or very young infant. However, I don’t. Here was the problem. I wanted control charts for two different variables, satisfaction with care, surveyed at discharge, and satisfaction with care 3…

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Excel for regression analysis: What a surprise!

I wouldn’t normally consider Excel for analysis, but there are four reasons I’ll be using it sometimes for the next class I’m teaching. First of all, we start out with some pretty basic statistics, I’m not even sure I’d call them statistics, and Excel is good for that kind of stuff. Second, Excel now has…

It doesn’t matter what you do (and that’s a good thing)

I have several ideas for blog posts I haven’t written. One is for this blog on simple statistics that answer useful questions. Three others are for my 7 Generation Games blog, on various features and functions in Javascript. I haven’t written any of them. Instead, I wrote an annual report that was due for one…

What comes after you fixed all the bugs?

I’ve hardly blogged, answered emails or talked to anyone these past few months. We just received funding for two games and I have been working night and day, crisscrossing the country recording voices, demonstrating prototypes, contracting for art and animation, reviewing designs and fixing bugs.  Ah, the bugs. We have arrived at the level of…